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3. Chapter - Q00-Q99
4. Section - Q90-Q99
5. Category - Q91
6. Q91.0

Q91.0 - Trisomy 18, nonmosaicism (meiotic nondisjunction)

• Applicable to Trisomy 18, nonmosaicism (meiotic nondisjunction)
• The 2025 edition of ICD10-CM Q91.0 became effective on October 1, 2024.
• This is the American ICD10-CM version of Q91.0 - other international versions of ICD10 Q91.0 may differ.
• Q91.0 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

The following codes above Q91.0 contain annotation back-references that may be applicable to Q91.0:

• Chapter: Q00-Q99 - Congenital malformations, deformations and chromosomal abnormalities
• Section: Q90-Q99 - Chromosomal abnormalities, not elsewhere classified
• Category: Q91 - Trisomy 18 and Trisomy 13

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.